Please help me for fix this if statement

public function getlessonlist($session, $id = null)
    {
        $class_section_array = $this->customlib->get_myClassSection();
        $loggedinUserId = $_SESSION['admin']['id'];
        if ($this->userdata['role_id'] == '2') {
            // loggedin user id

            $this->datatables
            ->select('lesson.*,subject_groups.name as sgname,subjects.name as subname,subjects.code as subjects_code,sections.section as sname,sections.id as sectionid,subject_groups.id as subjectgroupsid,subjects.id as subjectid,class_sections.id as csectionid,classes.class as cname,classes.id as classid')
            ->searchable('classes.class,sections.section,subject_groups.name,subjects.name,lesson.name')
            ->orderable('classes.class,sections.section,subject_groups.name,subjects.name,lesson.name')
            ->join("subject_group_subjects", "subject_group_subjects.id = lesson.subject_group_subject_id")
            ->join("subject_groups", "subject_groups.id = subject_group_subjects.subject_group_id")
            ->join("subjects", "subjects.id = subject_group_subjects.subject_id")
            ->join("subject_group_class_sections", "subject_group_class_sections.id = lesson.subject_group_class_sections_id", 'inner')
            ->join("class_sections", "class_sections.id = subject_group_class_sections.class_section_id")
            ->join("sections", "sections.id = class_sections.section_id")
            ->join("classes", "classes.id = class_sections.class_id")
            ->where('lesson.session_id', $session)
            ->where('lesson.created_by', $loggedinUserId);

        } else {
            $this->datatables
            ->select('lesson.*,subject_groups.name as sgname,subjects.name as subname,subjects.code as subjects_code,sections.section as sname,sections.id as sectionid,subject_groups.id as subjectgroupsid,subjects.id as subjectid,class_sections.id as csectionid,classes.class as cname,classes.id as classid')
            ->searchable('sections.section,subject_groups.name,subjects.name,lesson.name')
            ->orderable('classes.class,sections.section,subject_groups.name,subjects.name,lesson.name')
            ->join("subject_group_subjects", "subject_group_subjects.id = lesson.subject_group_subject_id")
            ->join("subject_groups", "subject_groups.id = subject_group_subjects.subject_group_id")
            ->join("subjects", "subjects.id = subject_group_subjects.subject_id")
            ->join("subject_group_class_sections", "subject_group_class_sections.id = lesson.subject_group_class_sections_id", 'inner')
            ->join("class_sections", "class_sections.id = subject_group_class_sections.class_section_id")
            ->join("sections", "sections.id = class_sections.section_id")
            ->join("classes", "classes.id = class_sections.class_id")
            ->where('lesson.session_id', $session);
           
           
        }
       
        $this->datatables->group_by("lesson.subject_group_subject_id");
        $this->datatables->group_by("lesson.subject_group_class_sections_id");
        $this->datatables->from('lesson');
        return $this->datatables->generate('json');
    }
}